McElroy 3615707 TracStar 900/MegaMc 1236 Facer Blade Set NEW. Set of 6 spare facer blades for McElroy TracStar 900, MegaMc 1236, TracStar 1200, MegaMc 1648 fusion machine facers. This size blade must be repositioned for different pipe sizes. 6 blades, mounting screws and wrench.